Question

what do you understand by bt-cotton ?

Answer 1

it's a insecticide or ballcotton

Answer 2

Answer:

Bt cotton is a genetically modified crop. Just that. Follow the explanation to understand the need of such a crop and how it is exactly done. Bt stands for Bacillus thuringiensis - a soil bacterium which contains a toxic gene called Bt gene. The aim is to make the cotton crop resistant to bollworm.